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Math; Linear functions and inverse variation

Math class.
by

Ersha Browny

on 18 October 2012

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Transcript of Math; Linear functions and inverse variation

Linear functions and Inverse Variations that impact us! By Erin Murphy
&
Sasha Schusterbrown and inverse variations? Linear functions are when the line increases
or decreases at a constant rate.
Inverse Variation is where the line
decreases at smaller and smaller rates with each interval.
The biggest drop is always from 1 to 2. Our Linear Function... Y= .25(x-1970)+70 Our Inverse Variation Y | 20,000 | 14,ooo | 9,500 | 6000 | 4,500 | 3,000 | 2,500 | 2,100 | 1,850 | 1,700 This is what we found out! What are linear functions Y=MX+B Y=M/X We discovered that the life expectancy of people has recently been increasing at a mostly consistent rate of .25 years each year. We think this may be due to new medical and other recent health discoveries. If we have children at age 30, our linear model predicts they will live to be 85 years old, that is 7.5 years more than our predicted age! X | 1970 | 1980 | 1990 | 2000 | 2010|
Y | 70 | 72.5 | 75 | 77.5 | 80 | Math! Algebra Axis! Multiply Divide Thank you! We hope
you realize that math class really does impact us and effect our lives now, and forever will! :) 7.5 In finding this inverse variation, we noticed that as a car ages it becomes more used. The more used a car becomes, the lower its price. So with each year a car ages, the less it will cost.
We also found that, though the cost of the car is still decreasing, it is decreasing at a smaller and smaller rate each year, making it an inverse
function.
We predict that at 20 years this car will cost about $ 1,598. Car Worth Rate We
understand
that an inverse variation should never touch the Y or the X axis. We did our best and this graph was the best we found. "Sometimes, in math, we are like a trapeze
artist, and when we epically fail, Mr. Fouch
is there to catch and graciously save us,
like a safety net...
BAHAHAHAHAHA!!!"
-Erin Murphy X | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 Y= 31955.55/X Bazinga!
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